Music so awful that its only use is to be flaunted as a fashion accessory by those obsessed with the idea of coolness; it remains perpetually "obscure" because no sane human being would listen to this music for pleasure.
Dan: Hey dude, I just got a limited-edition copy of We Are As The Romans Should Have Been's new EP - and on vinyl, too! It's Gregorian chants with a mambo beat - mind-blowing! Come listen!
Ben: Ugh, no. You can keep your hipster shit to yourself.
Dan: SCREW YOU! YOU DON'T KNOW GOOD MUSIC!